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Q.

The figure shows a particle sliding on a frictionless track, which terminates in a straight horizontal section. If the particle starts slipping from the point A, how far away from the track will the particle hit the ground?

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a

3 m

b

4 m

c

2 m

d

1 m

answer is A.

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Detailed Solution

The given figure is

Question Image

From law of conservation of energy,   mg(1)=12mv2+mg(0.5) 

⇒v=10 m/s

Time of flight T = 2×0.510 = 110 s

Therefore R = v×T =110 ×10 s =1 m

 

 

 

 

 

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